Improvement in hydrocarbon-burners



T. B. DEXTER. Hydrocarbon Burner.

No. 218,619, Patented Aug. 19,1879.

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THOMAS B. DEXTER, OF LYNN, fMAss.

UNITE STATES" PATENT OFFICE.

, AssIeNoR' on ONE-HALF 111sv RIGHT TO THE GILMANTON MILLs, on BELMONT, N. H.

IMPROVEMENT IN HYDROCARBON-BURNERS. a

Specification forming part of Letters Patent No. 2 lS,6l9, dated August 19, 1879; application filed' December 28, 1878.

To all whom it may concern:

Be .it known that I, THOMAS B. DEXTER, of

. Lynn, in the county of Essex and State of other hydrocarbons; and consists more particularly in a tube or burner divided through the center by a longitudinal diaphragm, with the end of peculiar form, so that the steam, air, and oil are thoroughly combined and delivered in-the form of a wide flat sheet.

Figure 1 is a view illustrating my device in position beneath a steam boiler; Fig. 2, a longitudinal verticalsection of the device; Fig. 3, a longitudinalhorizontal section of the same; Fig. gt, a vertical cross-section.

A represents the tube or body of the burner, having its nose or delivery end a reduced in size, and having through its middle a vertical longitudinal diaphragm, b, the end of which is slightly recessed or cut away within the nose to, asshown at 13, Figs. 2 and 3. B represents a head or body, into which the tube A is screwed at its rear end, and which is provided with two passages, c and d, communicatin g with the interior of tube A on opposite sides of its partition and extending outward through opposite sides of head B, as shown,

7 the head being tapped or threaded to receive the feed-pipes. The rear end of the head B is provided. with an air-admission tube, 6, opening into the oil-passage c, and provided with a rotary valve or register, F, to control and vary the admission of the air. Theouter end of the tube 6 is closed by means of a removable screw-plug, g, arranged, as shown, directly in line with the passagec, so that when the plug is removed a cleaning-rod may be inserted directly through the'passages and passed forward through the nose of the burner, in order to remove any deposit or other obstructions that may have lodged therein.

As-the steam produces a constant forward draft or suction through the oil-passage, the

removal of theplug and the cleaning of the and escape at its nose.

passage may take place at any time without stopping the operation of the apparatus or extin guishin g the fire-a very important and valuable feature when the device is employed beneath a boiler. In applying the device it is inserted through the front of the fire-box with a downward inclination, as represented in Fig. 1, and with the partition I) standing in a vertical position.

Steam being admitted through the passage 01, it blows forward through one side of the tube A, and escapes at the contracted nose, and in so doing it produces aforward draft or suction through the opposite side of the tube and through the oil-inlet c and air-inlet 6. Oil being admitted at c in properly-graduated amounts it mingles with the air entering at e, and the two rush forward through the tube A In their passage through the tube the mingled air and oil are subjected to a high temperature from the steam on the opposite side of the diaphragm, the oil being thereby vaporized and caused to combine thoroughly with the air, As they issue at the nose they are deflected inward toward the issuing steam, which is also deflected toward them, and, owing to the fact of the partition being cut away at 43 within the mouth of the tube, the two jets impinge against each other in such manner as to cause an instantaneous and thorough combination of the elements and spreading of the same into a thin and wide horizontal sheet. This sheet taking fire produces a sheet of flame filling the whole, or nearly the whole,'interior of the fire-box.

The peculiar construction of the device admits of its being made cheaply, produces better results than are attainable with burners of the ordinary constructions, and admits of the pas sages being cleared while the device is in action.

It is to be noted that although the steam and air mingle within the burner, and the oil is vaporized in the interior, the combination does not take place until the mouth is reached. This is of importance for the reason that it prevents the danger of an ignition or explo lar contracted end and the longitudinal diaphragm b, with its end cut away within the tube, as shown.

3. The burner consisting of the divided tube A, the body B, provided with the passages c d, and the air-admission tube provided with the valve or register, and communicating with passage 0 at a point in rear of that at which the oii enters, as shown.

THOMAS B. DEXTER.

Witnesses:

P. T. DODGE, DONN I. TWITGHELL. 

